14.2 won't boot after installation (kernel panic)

horizn · 07-04-2016, 06:23 PM

I've just installed 14.2 pn software raid1, and got kernel panic as on attached screenshot:

https://postimg.org/image/dfg1ckfch/

This is pn kernel huge. on generic kernel there is no kernel panic but it stops booting because it is not able to find / partition.

Any idea?

Richard Cranium · 07-04-2016, 07:42 PM

We're going to need a little more detail.

horizn · 07-05-2016, 01:06 AM

Quote:

Originally Posted by Richard Cranium

We're going to need a little more detail.

What details?

Richard Cranium · 07-05-2016, 01:11 AM

With the level of detail about your setup that you've provided, my guess is that you screwed something up.

moesasji · 07-05-2016, 01:20 AM

The reason we need more details is because we can't tell from a screenshot what your system is and what you did and tried. Information that would for example help?

0) What is the hardware you are installing on?
1) What bootloader are you using?
2) As this is a raid1 system; did you configure it? How?
3) What have you tried to do to figure out what causes this?

In other words if you ask for help you have to give enough information that people can actually try to help you.

horizn · 07-05-2016, 03:00 AM

Quote:

Originally Posted by moesasji

The reason we need more details is because we can't tell from a screenshot what your system is and what you did and tried. Information that would for example help?

0) What is the hardware you are installing on?
1) What bootloader are you using?
2) As this is a raid1 system; did you configure it? How?
3) What have you tried to do to figure out what causes this?

In other words if you ask for help you have to give enough information that people can actually try to help you.

0. Gigabyte G41M Combo + Core2Quad + 4GB DDR3
1. LILO
2. As mentioned in README_RAID.TXT, I've done it many time (with luck) for different hardware configurations on Slackware 14.1
3. I've tried both with Kernel huge and generic as mentioned in README_RAID.TXT but with no luck. 14.1 in RAID1 installed in the same way works fine, so I suspect lack of support for some piece of hardware.

Emerson · 07-05-2016, 06:25 AM

Device (9,0) your kernel tries to mount as root is tape device. There is sr and sda available, but no md (software RAID). Looks like your initrd is not up to the task.

horizn · 07-05-2016, 07:08 AM

Quote:

Originally Posted by Emerson

Device (9,0) your kernel tries to mount as root is tape device. There is sr and sda available, but no md (software RAID). Looks like your initrd is not up to the task.

I've just installed 14.2 on software RAID1 in VirtualBox and have the same issue. So something must be different since 14.1 if it comes to software RAID1 setup.

RadicalDreamer · 07-05-2016, 07:23 AM

Maybe check it with this: http://www.cgsecurity.org/wiki/TestDisk
https://en.wikipedia.org/wiki/TestDisk

I never played with raid so I don't have any insight on that. My p9807u fx laptop didn't like the default kernel but liked the huge one.

Richard Cranium · 07-05-2016, 10:37 AM

If you are using an initrd, what are the contents of /boot/initrd-tree/etc/mdadm.conf? (I'm at work and typing the path from memory.)

It's possible that auto-detect of raid partitions was finally turned off in 4.4.x kernels.

(All of my desktop machines are using software RAID1, so I can tell you that 14.2 is quite capable of starting software RAID1 arrays.)

elcore · 07-05-2016, 11:16 AM

Mine panics when usb storage is plugged in on boot, otherwise works fine.
Using custom kernel 4.4.14 and grub, no initrd, no UUID.

horizn · 07-05-2016, 05:15 PM

Quote:

Originally Posted by Richard Cranium

If you are using an initrd, what are the contents of /boot/initrd-tree/etc/mdadm.conf? (I'm at work and typing the path from memory.)

It's possible that auto-detect of raid partitions was finally turned off in 4.4.x kernels.

(All of my desktop machines are using software RAID1, so I can tell you that 14.2 is quite capable of starting software RAID1 arrays.)

I'll check tomorrow, because at home I've installed 14.2 on single hdd.

Richard Cranium · 07-05-2016, 08:09 PM

I will add that all of my machines use a dedicated ext2 /boot partition to hold the kernel and initrd images.